CN116950935A - Shearing and pressurizing device, control method and blowout preventer - Google Patents

Shearing and pressurizing device, control method and blowout preventer Download PDF

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Publication number
CN116950935A
CN116950935A CN202211202707.1A CN202211202707A CN116950935A CN 116950935 A CN116950935 A CN 116950935A CN 202211202707 A CN202211202707 A CN 202211202707A CN 116950935 A CN116950935 A CN 116950935A
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CN
China
Prior art keywords
assembly
blowout preventer
valve
power pump
shearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211202707.1A
Other languages
Chinese (zh)
Inventor
郭晨
张国田
陈慧慧
孟少辉
高巧娟
吴楠
王晓颖
何伟红
李英
付强
陈星�
马然
王树森
王磊
郝围围
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Engineering Technology R&D Co Ltd
Beijing Petroleum Machinery Co Ltd
Original Assignee
China National Petroleum Corp
CNPC Engineering Technology R&D Co Ltd
Beijing Petroleum Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China National Petroleum Corp, CNPC Engineering Technology R&D Co Ltd, Beijing Petroleum Machinery Co Ltd filed Critical China National Petroleum Corp
Priority to CN202211202707.1A priority Critical patent/CN116950935A/en
Publication of CN116950935A publication Critical patent/CN116950935A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
    • E21B33/061—Ram-type blow-out preventers, e.g. with pivoting rams
    • E21B33/062—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams
    • E21B33/063—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams for shearing drill pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/027—Check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The application provides a shearing and pressurizing device, a control method and a blowout preventer, wherein the shearing and pressurizing device comprises an electric control assembly, and the electric control assembly is electrically connected with a power assembly, an energy storage assembly and a valve assembly; the maximum output pressure of the second power pump assembly of the power assembly is greater than the maximum output pressure of the first power pump assembly; the energy storage component is communicated with the blowout preventer through the valve component; the first power pump assembly of the power assembly can provide pressure fluid for the energy storage assembly, the energy storage assembly conveys the pressure fluid to the blowout preventer, and the blowout preventer is controlled to perform normal shearing action on the drilling tool; if the second power pump assembly of the power assembly can provide pressure liquid with higher pressure when the drilling tool is determined not to be sheared through the detection data of the flow detection part of the shearing and pressurizing device, the blowout preventer is driven to conduct further shearing action on the drilling tool, and the drilling tool is sheared, so that a wellhead can be closed, and blowout accidents are prevented.

Description

Shearing and pressurizing device, control method and blowout preventer
Technical Field
The application relates to the technical field of drilling, in particular to a shearing and pressurizing device, a control method and a blowout preventer.
Background
The blowout preventer is a safety sealing wellhead device for preventing blowout in oil field, and is used for closing wellhead during oil testing, well repairing, well completion and other operations to prevent blowout accident.
In the working process, if the condition that a wellhead needs to be closed is met, a hydraulic system of the blowout preventer provides pressure fluid for the blowout preventer, so that the blowout preventer generates shearing force and a drilling tool is sheared.
However, in the prior art, the rated working pressure of the hydraulic system of the blowout preventer is low, and the situation that the drilling tool cannot be completely sheared due to insufficient shearing force can occur, so that blowout is out of control finally.
Disclosure of Invention
In view of the above problems, the embodiment of the application provides a shearing and pressurizing device, a control method and a blowout preventer, which can ensure that a drilling tool is completely sheared, so that the situation of out-of-control blowout can not occur.
In order to achieve the above object, the embodiment of the present application provides the following technical solutions:
the first aspect of the embodiment of the application provides a shearing and pressurizing device which is used for being connected with a blowout preventer, wherein the shearing and pressurizing device comprises a power assembly, an energy storage assembly, a valve assembly and an electrical control assembly, and the electrical control assembly is electrically connected with the power assembly, the energy storage assembly and the valve assembly; the power assembly comprises a first power pump assembly and a second power pump assembly, and the maximum output pressure of the second power pump assembly is larger than that of the first power pump assembly; the energy storage component is communicated with the first power pump component and stores pressure liquid provided by the first power pump component; the energy storage component is communicated with the blowout preventer through a valve component, and the valve component is used for adjusting the output pressure of pressure fluid; the second power pump assembly is communicated with the blowout preventer; at least one flow detection piece is arranged on a pipeline, communicated with the blowout preventer, of the energy storage component, and the flow detection piece is electrically connected with the electrical control component.
The shearing and pressurizing device provided by the embodiment of the application comprises a power assembly, an energy storage assembly, a valve assembly and an electrical control assembly, wherein a first power pump assembly of the power assembly can provide pressure fluid for the energy storage assembly, the energy storage assembly conveys the pressure fluid to a blowout preventer, and the blowout preventer is controlled to perform normal shearing action on a drilling tool; if the second power pump assembly of the power assembly can provide pressure liquid with higher pressure when the drilling tool is determined not to be sheared through the detection data of the flow detection part of the shearing and pressurizing device, the blowout preventer is driven to conduct further shearing action on the drilling tool, and the drilling tool is sheared, so that a wellhead can be closed, and blowout accidents are prevented.
In one possible implementation, the first power pump assembly includes at least one first power pump and the second power pump assembly includes at least one second power pump having a maximum output pressure that is greater than the maximum output pressure of the first power pump.
In this way, the plurality of first power pumps and the plurality of second power pumps can ensure the reliability of the power assembly.
In one possible implementation, the power assembly further includes an oil tank, one end of the first power pump and one end of the second power pump both communicating with the oil tank; the other end of the first power pump is communicated with the energy storage component, and the other end of the second power pump is communicated with the blowout preventer; the first power pump and the second power pump are communicated with at least one overflow valve.
In this way, the presence of the relief valve can provide safety protection for the first and second power pumps.
In one possible implementation, the valve assembly includes a bypass valve, a first communication line and a second communication line are disposed between the energy storage assembly and the bypass valve, the first communication line is provided with a pressure regulating valve, and the bypass valve is configured to have a first communication state and a second communication state; when the bypass valve is in a first communication state, the bypass valve is communicated with the first communication pipeline, and the energy storage component is communicated with the bypass valve through the first communication pipeline; when the bypass valve is in the second communication state, the bypass valve is communicated with the second communication pipeline, and the energy storage component is communicated with the bypass valve through the second communication pipeline.
In this way, the valve of the bypass valve can adjust the pressure of the pressure fluid output by the energy storage component in the switching process of the first communication state and the second communication state.
In one possible implementation, the bypass valve is a two-position three-way valve; the bypass valve is a hydraulic control valve; and a one-way valve is arranged on a connecting pipeline between the bypass valve and the blowout preventer.
Thus, the existence of the one-way valve ensures that the pressure liquid flowing out of the energy storage component can flow in one direction only.
In one possible implementation, the valve assembly further comprises a blowout preventer control swivel valve located on the bypass valve and the communication line of the blowout preventer; the blowout preventer control rotary valve is a three-position four-way valve.
Thus, the blowout preventer controls the presence of the rotary valve, and the opening and closing state of the communication pipeline between the bypass valve and the blowout preventer can be controlled.
In one possible implementation, the electrical control assembly includes a controller and a control valve block, the controller being connected to the power assembly and the control valve block; the control valve group is used for controlling the on-off state of the valve.
In this way, control of the power assembly, the energy storage assembly and the valve assembly by the electrical control assembly can be achieved.
A second aspect of the embodiments of the present application provides a blowout preventer comprising a shear device and a shear pressurizing device according to any of the preceding implementations, the shear pressurizing device in communication with the shear device via a conduit, the shear pressurizing device configured to provide pressurized fluid to the shear device.
The blowout preventer provided by the embodiment of the application is connected with a shearing and pressurizing device, the shearing and pressurizing device comprises a power assembly, an energy storage assembly, a valve assembly and an electrical control assembly, a first power pump assembly of the power assembly can provide pressure liquid for the energy storage assembly, the energy storage assembly can convey the pressure liquid to the blowout preventer, and the blowout preventer is controlled to perform normal shearing action on a drilling tool; if the second power pump assembly of the power assembly can provide pressure liquid with higher pressure when the drilling tool is determined not to be sheared through the detection data of the flow detection part of the shearing and pressurizing device, the blowout preventer is driven to conduct further shearing action on the drilling tool, and the drilling tool is sheared, so that a wellhead can be closed, and blowout accidents are prevented.
A third aspect of the embodiments of the present application provides a method for controlling a shear supercharging device, which is applicable to any one of the foregoing implementation manners, including:
the first power pump assembly of the power assembly is controlled to provide pressure fluid for the energy storage assembly, the energy storage assembly is controlled to convey the pressure fluid to the blowout preventer, and the blowout preventer is controlled to perform shearing action on the drilling tool;
controlling a flow detection part to detect the real-time flow of a communication pipeline between the energy storage component and the blowout preventer, calculating the absolute value of the difference value between the real-time flow and the standard flow, and comparing the absolute value of the difference value with a reference value;
when the absolute value of the difference value is unchanged within a preset time period and is not greater than a reference value, determining that the drilling tool is sheared, and enabling the shearing supercharging device to be in a conventional shearing state;
when the absolute value of the difference value is unchanged within the preset time period and is larger than the reference value, determining that the drilling tool is not sheared, enabling the shearing and pressurizing device to enter a pressurizing and shearing state, and controlling a second power pump assembly of the power assembly to be started, wherein compared with the first power pump assembly, the second power pump assembly is used for providing pressure fluid with higher pressure for the blowout preventer;
and a second power pump assembly of the power assembly is controlled to convey pressure fluid to the blowout preventer, and the blowout preventer is controlled to perform shearing action on the drilling tool.
According to the shearing and pressurizing control method provided by the embodiment of the application, whether the second power pump assembly is required to be started for pressurizing and shearing is determined by calculating the difference value between the real-time flow and the standard flow of the communication pipeline of the energy storage assembly and the blowout preventer and comparing the absolute value of the difference value with the reference value; in the whole control process, manual operation is not needed, and errors possibly caused by manual operation are avoided.
In one possible implementation, the standard flow is a flow value measured by a flow sensor when the blowout preventer performs a lost motion shearing action; when the shearing pressurizing device is in a normal shearing state, calculating and recording the difference value between the real-time flow and the standard flow, taking the arithmetic average value of the absolute values of the difference values, and taking the arithmetic average value as a reference value.
The construction of the present application and other objects and advantages thereof will be more readily understood from the description of the preferred embodiment taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a shear pressurizing device coupled to a blowout preventer according to an embodiment of the present application;
FIG. 2 is a schematic view of a first construction of a first power pump assembly according to an embodiment of the present application;
FIG. 3 is a schematic view of a second construction of a first power pump assembly according to an embodiment of the present application;
FIG. 4 is a schematic view of a third construction of a first power pump assembly according to an embodiment of the present application;
FIG. 5 is a schematic view of a fourth configuration of a first power pump assembly according to an embodiment of the present application;
FIG. 6 is a schematic view of a bypass valve in a valve assembly according to an embodiment of the present application in a first communication state;
FIG. 7 is a schematic view of a bypass valve in a valve assembly according to an embodiment of the present application in a second communication state;
FIG. 8 is a schematic illustration of an energy storage assembly provided by an embodiment of the present application;
FIG. 9 is a schematic diagram of an electrical control assembly according to an embodiment of the present application;
FIG. 10 is a schematic illustration of a blowout preventer provided in an embodiment of the present application;
fig. 11 is a flowchart of a method for controlling shear pressurization according to an embodiment of the present application.
Reference numerals illustrate:
100-power assembly; 110-a first power pump assembly;
111-a first power pump; 120-a second power pump assembly;
121-a second power pump; 130-an oil tank;
140-overflow valve; 150-remote control isolation valve;
200-an energy storage component; 210-an accumulator;
300-valve assembly; 310-bypass valve;
320-a pressure regulating valve; 330-a one-way valve;
340-blowout preventer control swivel valve; 350-auxiliary control rotary valve;
400-an electrical control assembly; 410-a controller;
420-control valve group; 500-flow detection member;
600-blowout preventer; 700-drilling tool;
800-a first pressure detecting member; 900-second pressure detecting member.
Detailed Description
In the prior art, the blowout preventer is a safety sealing wellhead device which is commonly used in oil fields and used for preventing blowout accidents and is used for closing a wellhead in the working processes of oil testing, well repairing, well completion and the like. During the working process, if the condition that a wellhead needs to be closed is met, a hydraulic system of the blowout preventer provides pressure fluid for the blowout preventer, so that shearing force is generated by a shearing flashboard of the blowout preventer, and the shearing flashboard of the blowout preventer can shear a drilling tool, wherein the drilling tool is generally a drill rod.
However, in the prior art, the rated working pressure of the hydraulic system of the blowout preventer is generally 21MPa, and when a drilling tool is sheared, if special parts such as a drill pipe joint, a drill collar and the like are encountered, insufficient shearing force can occur, shearing failure is caused, and finally blowout is out of control. In addition, in the prior art, when the shearing flashboard of the blowout preventer is used for shearing a drilling tool, a large amount of manual operation and judgment are needed, the operation steps are complex, the response time is long, and the situation of misoperation is possible.
Based on the above problems, the embodiment of the application provides a shearing and pressurizing device, a control method and a blowout preventer, wherein the shearing and pressurizing device is connected with the blowout preventer, the shearing and pressurizing device comprises a power assembly, an energy storage assembly, a valve assembly and an electrical control assembly, a first power pump assembly of the power assembly can provide pressure fluid for the energy storage assembly, the energy storage assembly can convey the pressure fluid to the blowout preventer, and the blowout preventer is controlled to perform normal shearing action on a drilling tool; if the second power pump assembly of the power assembly can provide pressure liquid with higher pressure when the drilling tool is determined not to be sheared through the detection data of the flow detection part of the shearing and pressurizing device, the blowout preventer is driven to conduct further shearing action on the drilling tool, and the drilling tool is sheared, so that a wellhead can be closed, and blowout accidents are prevented. In addition, according to the shearing and pressurizing control method provided by the embodiment of the application, whether the second power pump assembly is required to be started for pressurizing and shearing is determined by calculating the difference value between the real-time flow and the standard flow of the communication pipeline of the energy storage assembly and the blowout preventer and comparing the absolute value of the difference value with the reference value; in the whole control process, manual operation is not needed, and errors possibly caused by manual operation are avoided.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The following describes the technical scheme of the present application and how the technical scheme of the present application solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
The following describes in detail the shear pressurizing device according to the embodiment of the present application with reference to fig. 1 to 10.
As shown in fig. 1, the present application provides a shear pressurizing device for connecting a blowout preventer 600, the shear pressurizing device comprises a power assembly 100, an energy storage assembly 200, a valve assembly 300 and an electrical control assembly 400, wherein the electrical control assembly 400 is electrically connected with the power assembly 100, the energy storage assembly 200 and the valve assembly 300. Wherein, the shearing pressurizing device is connected with the connecting blowout preventer 600 through a pipeline; the power assembly 100 is mainly used for providing pressure fluid for the energy storage assembly 200 or directly providing pressure fluid for the blowout preventer 600; the energy storage assembly 200 is mainly used for storing pressure fluid and providing the pressure fluid for the blowout preventer 600 in the shearing process, so as to drive the shearing ram of the blowout preventer 600 to shear the drilling tool 700; in addition, the electrical control assembly 400 is capable of controlling the power assembly 100, the energy storage assembly 200, and the valve assembly 300.
Wherein the power assembly 100 includes a first power pump assembly 110 and a second power pump assembly 120, the maximum output pressure of the second power pump assembly 120 is greater than the maximum output pressure of the first power pump assembly 110. Specifically, the maximum output pressure of the first power pump assembly 110 may be 21MPa, and the maximum output pressure of the second power pump assembly 120 may be 35MPa.
The energy storage assembly 200 is communicated with the first power pump assembly 110 and stores pressure fluid provided by the first power pump assembly 110; the pressure of the pressure fluid stored in the accumulator package 200 is the same as the output pressure of the first power pump package 110, and the accumulator package 200 is capable of providing pressure fluid to the blowout preventer 600 when the tool 700 needs to be sheared.
Wherein the energy storage assembly 200 is in communication with the blowout preventer 600 via a valve assembly 300, the valve assembly 300 being adapted to regulate the output pressure of the pressure fluid; the valve assembly 300 is capable of reducing the pressure of the pressurized fluid output from the accumulator assembly 200 when no shearing of the drilling tool 700 is required.
Wherein the second power pump assembly 120 is in communication with the blowout preventer 600; when the pressure fluid provided by the accumulator assembly 200 cannot shut off the drilling tool 700, the second power pump assembly 120 can provide pressure fluid at a greater pressure to the blowout preventer 600, thereby ensuring that the drilling tool 700 can be shut off.
At least one flow detecting member 500 is installed on a pipeline where the energy storage assembly 200 is communicated with the blowout preventer 600, and the flow detecting member 500 is electrically connected with the electrical control assembly 400. The flow sensing member 500 is configured to sense the flow of pressurized fluid through a conduit through which the accumulator assembly 200 communicates with the blowout preventer 600, and determine whether the second power pump assembly 120 needs to be activated for pressurized shearing by determining the magnitude of the flow.
In the embodiment of the present application, as shown in fig. 2 to 5, the first power pump assembly 110 includes at least one first power pump 111, and the second power pump assembly 120 includes at least one second power pump 121, and a maximum output pressure of the second power pump 121 is greater than a maximum output pressure of the first power pump 111. So configured, the plurality of first power pumps 111 and the plurality of second power pumps 121 can ensure the reliability of the power assembly 100, and when one of the power pumps fails, the other power pumps can ensure the normal operation of the power assembly 100.
In one embodiment, as shown in fig. 2, the first power pump assembly 110 includes a first power pump 111 and two second power pumps 121, where the two second power pumps 121 are connected in parallel. Specifically, the first power pump 111 may be a plunger pump, and the maximum output pressure is 21MPa; the two second power pumps 121 may be a gear pump and an air pump, respectively, the maximum output pressures of which are 35MPa.
In another embodiment, as shown in FIG. 3, the first power pump assembly 110 includes a first power pump 111 and a second power pump 121. Specifically, the first power pump 111 may be a plunger pump, and the maximum output pressure is 21MPa; the second power pump 121 may be a gear pump having a maximum output pressure of 35MPa.
In yet another embodiment, as shown in FIG. 4, the first power pump assembly 110 includes a first power pump 111 and a second power pump 121. Specifically, the first power pump 111 may be a plunger pump, and the maximum output pressure is 21MPa; the second power pump 121 may be an air pump having a maximum output pressure of 35MPa.
In yet another embodiment, as shown in FIG. 5, the first power pump assembly 110 includes two first power pumps 111 and one second power pump 121. Specifically, the two first power pumps 111 may be plunger pumps, and the maximum output pressure is 21MPa; the second power pump 121 may be an air pump having a maximum output pressure of 35MPa.
In addition, as shown in fig. 2 to 5, the second power pump assembly 120 may be further connected to the energy storage assembly 200 through a pipeline, and a remote control isolation valve 150 is disposed on the pipeline where the second power pump assembly 120 is connected to the energy storage assembly 200, and the remote control isolation valve 150 may be electrically connected to the electrical control assembly 400. The pressure of the pressure fluid output by the second power pump assembly 120 may be adjustable, and when the remote isolation valve 150 is opened, the second power pump assembly 120 may also provide the pressure fluid to the energy storage assembly 200, and the pressure of the pressure fluid may be the same as the pressure fluid provided by the first power pump assembly 110. Thus, when the first power pump assembly 110 fails, the second power pump assembly 120 may serve as a backup to provide pressurized fluid to the accumulator assembly 200. In addition, when the second power pump assembly 120 needs to provide higher pressure fluid to the blowout preventer 600, the remote isolation valve 150 is closed.
In the embodiment of the present application, the power assembly 100 further includes an oil tank 130, wherein one end of the first power pump 111 and one end of the second power pump 121 are both communicated with the oil tank 130, and the oil tank 130 is capable of providing pressure fluid; wherein the other end of the first power pump 111 is communicated with the energy storage assembly 200, and the other end of the second power pump 121 is communicated with the blowout preventer 600; the first power pump 111 is capable of delivering pressurized fluid to the accumulator assembly 200 and the second power pump 121 is capable of delivering pressurized fluid to the blowout preventer 600.
In addition, the first power pump 111 and the second power pump 121 are in communication with at least one relief valve 140. By this arrangement, the presence of the relief valve 140 provides safety protection for the first and second power pumps 111, 121, and when the relief valve 140 is opened, excess pressure fluid can be returned to the tank.
In the embodiment of the present application, as shown in fig. 6 and 7, the valve assembly 300 includes a bypass valve 310, a first communication line and a second communication line are provided between the energy storage assembly 200 and the bypass valve 310, a pressure regulating valve 320 is provided on the first communication line, and the bypass valve 310 is configured to have a first communication state and a second communication state. The valve of the bypass valve 310 is switchable between a first communication state and a second communication state.
As shown in fig. 6, when the bypass valve 310 is in the first communication state, the bypass valve 310 communicates with the first communication line, and the accumulator assembly 200 communicates with the bypass valve 310 through the first communication line. In the figure, a pressure regulating valve 320 is disposed in the first communication pipeline, when the pressure fluid in the energy storage assembly 200 passes through the pressure regulating valve 320, the pressure regulating valve 320 can reduce the pressure of the pressure fluid, the pressure fluid after the pressure reduction can be conveyed to the blowout preventer 600, and the pressure fluid after the pressure reduction is insufficient to drive the blowout preventer 600 to shear the drilling tool 700.
As shown in fig. 7, when the bypass valve 310 is in the second communication state, the bypass valve 310 communicates with the second communication line, and the accumulator assembly 200 communicates with the bypass valve 310 through the second communication line. In the figure, the pressure fluid in the energy storage assembly 200 does not need to pass through the pressure regulating valve 320, and the pressure fluid can enter the blowout preventer 600 after passing through the bypass valve 310 and drive the blowout preventer 600 to shear the drilling tool 700.
With this arrangement, the valve of the bypass valve 310 can regulate the pressure of the pressure fluid output from the accumulator assembly 200 during the switching between the first communication state and the second communication state.
In the embodiment of the present application, the bypass valve 310 is a two-position three-way valve; the bypass valve 310 is a hydraulic control valve. The bypass valve 310 is a two-position three-way valve, and is thus switchable between a first communication state and a second communication state.
In addition, at least one check valve 330 is provided on the connection line between the bypass valve 310 and the blowout preventer 600. The existence of the check valve 330 ensures that the pressure fluid flowing out of the energy storage assembly 200 only flows in one direction, and no countercurrent condition occurs. Alternatively, the check valve 330 may be replaced by a shuttle valve or a remote control valve.
In an embodiment of the present application, the valve assembly 300 further includes a blowout preventer control swivel 340, the blowout preventer control swivel 340 being located on a communication line between the bypass valve 310 and the blowout preventer 600; specifically, the blowout preventer control rotary valve 340 is a three-position four-way valve, and the blowout preventer control rotary valve 340 is electrically connected with the electrical control assembly 400. In this way, the presence of the blowout preventer control rotary valve 340 can control the open/close state of the communication line between the bypass valve 310 and the blowout preventer 600.
In an embodiment of the present application, as shown in fig. 9, the electrical control assembly 400 includes a controller 410 and a control valve group 420, and the controller 410 is connected to the power assembly 100 and the control valve group 420; the control valve group 420 is used to control the on-off state of the valve. Specifically, the controller 410 may be electrically connected to the first power pump 111 and the second power pump 121; the control valve block 420 may be electrically connected to the blowout preventer control swivel 340, bypass valve 310, remote isolation valve 150, etc. valves and control the on-off state of these valves. With this arrangement, control of the power assembly 100, the energy storage assembly 200, and the valve assembly 300 by the electrical control assembly 400 can be achieved.
In some embodiments, as shown in fig. 8, the electrical control assembly 400 includes a controller 410 and a control valve group 420, and the energy storage assembly 200 may be composed of a plurality of energy storage devices 210, where the energy storage devices 210 are used to store pressure fluid.
In some embodiments, at least one first pressure detecting element 800 is installed on a pipeline that communicates with the blowout preventer 600 of the energy storage assembly 200, and the first pressure detecting element 800 is used for detecting the pressure of the pressure fluid output by the energy storage assembly 200; at least one second pressure detecting member 900 is installed on a pipeline of the second power pump assembly 120 in communication with the blowout preventer 600, and the second pressure detecting member 900 is used for detecting the pressure of the pressure fluid outputted from the second power pump assembly 120.
On the basis of the above embodiments, referring to fig. 1, the present application provides a blowout preventer 600, including a shearing device and a shearing and pressurizing device, the shearing and pressurizing device being in communication with the shearing device through a pipeline, the shearing and pressurizing device being configured to provide pressure fluid to the shearing device.
As shown in fig. 10, a shearing device of the blowout preventer 600 is shown, in which a shearing ram is provided, and in addition, the drilling tool 700 is located in the shearing device, and the shearing ram is capable of shearing the drilling tool 700.
The energy storage component 200 of the shearing and pressurizing device conveys pressure fluid into the blowout preventer 600 and controls the shearing flashboard of the shearing device to perform normal shearing action on the drilling tool 700; if it is determined, by the detection data of the flow detection member 500 of the shear pressurizing device, that the drilling tool 700 is not sheared, the power assembly 100 of the shear pressurizing device can provide pressure fluid with higher pressure, and the shear ram of the shear device is driven to perform further shearing action on the drilling tool 700, so that the blowout preventer 600 can shear the drilling tool 700.
In addition, the bypass valve 310 and the blowout preventer 600 are provided with an auxiliary control rotary valve 350 on the communication line, and the blowout preventer 600 includes an auxiliary device in addition to the shearing device; the auxiliary control rotary valve 350 is in communication with the auxiliary devices of the blowout preventer 600 via a pipeline.
On the basis of the above embodiment, referring to fig. 11, the present application provides a method for controlling a shear supercharging device, which is applicable to a shear supercharging device, and includes:
s100: the first power pump assembly of the control power assembly provides pressure fluid for the energy storage assembly, the energy storage assembly is controlled to convey the pressure fluid to the blowout preventer, and the blowout preventer is controlled to perform shearing action on the drilling tool.
Specifically, the electrical control assembly 400 controls the first power pump assembly 110 of the power assembly 100 to open, the first power pump assembly 110 provides pressure fluid to the energy storage assembly 200, and the energy storage assembly 200 communicates with the blowout preventer 600 through the valve assembly 300; when it is desired to shear the drilling tool 700, the bypass valve 310 in the valve assembly 300 switches operating states so that the accumulator assembly 200 delivers pressurized fluid into the blowout preventer 600, thereby causing the shearing device of the blowout preventer 600 to shear the drilling tool 700.
S200: and controlling the flow detection part to detect the real-time flow of the communication pipeline between the energy storage component and the blowout preventer, calculating the absolute value of the difference value between the real-time flow and the standard flow, and comparing the absolute value of the difference value with the reference value.
The standard flow is a flow value measured by a flow sensor when the blowout preventer 600 performs a blank well shearing operation. When the blowout preventer 600 performs the idle well shearing action, the drilling tool 700 is not installed in the shearing device of the blowout preventer 600, and the flow rate measured by the flow rate detecting member 500 is the standard flow rate in the idle well shearing process.
When the drilling tool 700 is installed in the shearing device of the blowout preventer 600, the energy storage assembly 200 outputs pressure fluid to the blowout preventer 600, so that the blowout preventer 600 shears the drilling tool 700, and the flow measured by the flow detection member 500 is real-time flow in the shearing process. During drilling, due to the presence of the drilling tool 700 within the shear device, the real-time flow rate may deviate from and be less than the standard flow rate, resulting in a difference.
S300: and when the absolute value of the difference value is unchanged in a preset time period and is not greater than the reference value, determining that the drilling tool is sheared, and enabling the shearing supercharging device to be in a conventional shearing state.
It should be noted that, the absolute value of the difference value is unchanged for a period of time, which indicates that the measured value of the flow detection member 500 enters a stable phase, and the measured value at this time is an effective value; the time period may be 3s or other values, and the embodiment is not specifically limited, but the well control standard requirement should be met.
When the shearing pressurizing device is in a normal shearing state, calculating and recording the difference value between the real-time flow and the standard flow, taking the arithmetic average value of the absolute values of the difference values, and taking the arithmetic average value as a reference value. The reference value is obtained through past historical data statistics, and a statistical arithmetic average value can be used as the reference value in actual setting. Thus, when the absolute value of the difference does not change for a period of time and is not greater than the reference value, it may be determined that the drilling tool 700 has been sheared.
S400: when the absolute value of the difference is unchanged in a preset time period and is larger than the reference value, the drilling tool is determined to be not sheared, the shearing and pressurizing device enters a pressurizing and shearing state, and the second power pump assembly of the power assembly is controlled to be started.
Specifically, the maximum output pressure provided by the first power pump assembly 110 is 21MPa, and the pressure fluid at the maximum output pressures 35MPa and 35MPa provided by the second power pump assembly 120 is sufficient to shear the drilling tool 700. In addition, the maximum pressure standard which can be born by the parts on the pipeline of the energy storage assembly 200 communicated with the blowout preventer 600 is not lower than 21MPa; the maximum pressure standard that the components on the pipeline in which the second power pump assembly 120 communicates with the blowout preventer 600 can withstand is not less than 35MPa. By the arrangement, the maximum pressure standard of parts on part of the pipelines is reduced, and the manufacturing cost is reduced.
S500: and a second power pump assembly of the power assembly is controlled to convey pressure fluid to the blowout preventer, and the blowout preventer is controlled to perform shearing action on the drilling tool.
Specifically, when the shear pressurizing device enters a pressurized shear state, the second power pump assembly 120 is capable of providing pressure fluid with a maximum pressure of 35MPa and delivering the pressure fluid to the blowout preventer 600, and further shearing the uncut drilling tool 700, compared to the pressure fluid with a pressure of 21MPa provided by the first power pump assembly 110 and the energy storage assembly 200.
It should be noted that, the connecting pipeline between the bypass valve 310 and the blowout preventer 600, and the connecting pipeline between the second power pump assembly 120 and the blowout preventer 600 belong to parallel pipelines, and there is a junction point, and the connecting pipeline between the bypass valve 310 and the blowout preventer 600 may be provided with a check valve 330. When the second power pump 121 set is on, the pressure of the pressure fluid provided by the second power pump assembly 120 is greater than the pressure of the pressure fluid provided by the energy storage assembly 200, such that the check valve 330 is closed and the pressure fluid provided by the energy storage assembly 200 cannot flow into the blowout preventer 600.
The first pressure detecting member 800 may be installed to detect the pressure value P1 of the pressure fluid outputted from the energy storage assembly 200, and the second pressure detecting member may be installed to detect the pressure value P2 of the pressure fluid outputted from the second power pump assembly 120. When the pressure boosting and shearing are completed, the drilling tool 700 is sheared, the value of P2 is rapidly reduced, when the value of P2 is smaller than the value of P1, the check valve 330 is opened again, the pressure liquid provided by the energy storage assembly 200 flows into the blowout preventer 600 again, and the blowout preventer 600 is driven to complete subsequent actions. Finally, when the absolute value of the difference between the real-time flow detected by the flow detecting member 500 and the standard flow is unchanged for a period of time and is not greater than the reference value, the electrical control assembly 400 controls the second power pump assembly 120 to be turned off, the pressurization is ended, and the shearing completion state is entered.
Alternatively, the check valve 330 may be replaced by a shuttle valve or a remote control valve electrically connected to the electrical control assembly 400, and the opening and closing of the shuttle valve or the remote control valve may be controlled by comparing the sizes of P2 and P1.
In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The application should not be construed as limited to the particular orientations and configurations or operations of the device or element in question. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically stated otherwise.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (10)

1. The shearing and pressurizing device is used for being connected with a blowout preventer and is characterized by comprising a power assembly, an energy storage assembly, a valve assembly and an electrical control assembly, wherein the electrical control assembly is electrically connected with the power assembly, the energy storage assembly and the valve assembly;
the power assembly comprises a first power pump assembly and a second power pump assembly, and the maximum output pressure of the second power pump assembly is larger than that of the first power pump assembly; the energy storage component is communicated with the first power pump component and stores pressure liquid provided by the first power pump component; the energy storage assembly is communicated with the blowout preventer through the valve assembly, and the valve assembly is used for adjusting the output pressure of pressure fluid; the second power pump assembly is in communication with the blowout preventer;
at least one flow detection part is arranged on a pipeline, communicated with the blowout preventer, of the energy storage component, and the flow detection part is electrically connected with the electrical control component.
2. The shear pressurizing device of claim 1, wherein the first power pump assembly comprises at least one first power pump and the second power pump assembly comprises at least one second power pump having a maximum output pressure greater than a maximum output pressure of the first power pump.
3. The shear pressurizing device of claim 2, wherein the power assembly further comprises an oil tank, and wherein one end of the first power pump and one end of the second power pump are both in communication with the oil tank;
the other end of the first power pump is communicated with the energy storage component, and the other end of the second power pump is communicated with the blowout preventer;
the first power pump and the second power pump are communicated with at least one overflow valve.
4. The shear pressurizing device of claim 1, wherein the valve assembly comprises a bypass valve, a first communication line and a second communication line are disposed between the energy storage assembly and the bypass valve, the first communication line is provided with a pressure regulating valve, and the bypass valve is configured to have a first communication state and a second communication state;
when the bypass valve is in a first communication state, the bypass valve is communicated with the first communication pipeline, and the energy storage component is communicated with the bypass valve through the first communication pipeline;
when the bypass valve is in a second communication state, the bypass valve is communicated with the second communication pipeline, and the energy storage component is communicated with the bypass valve through the second communication pipeline.
5. The shear pressurizing device of claim 4, wherein the bypass valve is a two-position three-way valve; the bypass valve is a hydraulic control valve;
and a one-way valve is arranged on a connecting pipeline between the bypass valve and the blowout preventer.
6. The shear pressurizing device of claim 4, wherein the valve assembly further comprises a blowout preventer control swivel valve positioned on a communication line of the bypass valve and the blowout preventer;
the blowout preventer control rotary valve is a three-position four-way valve.
7. The shear pressurizing device of any of claims 1-6, wherein the electrical control assembly comprises a controller and a control valve block, the controller being coupled to the power assembly and the control valve block; the control valve group is used for controlling the on-off state of the valve.
8. A blowout preventer comprising a shearing device and the shear pressurizing device of any one of claims 1-7, the shear pressurizing device in communication with the shearing device via a conduit, the shear pressurizing device for providing pressurized fluid to the shearing device.
9. A method of controlling a shear supercharging device as claimed in any one of claims 1 to 7, comprising:
the first power pump assembly of the power assembly is controlled to provide pressure fluid for the energy storage assembly, the energy storage assembly is controlled to convey the pressure fluid to the blowout preventer, and the blowout preventer is controlled to perform shearing action on the drilling tool;
controlling a flow detection part to detect real-time flow of a communication pipeline of the energy storage component and the blowout preventer, calculating an absolute value of a difference value between the real-time flow and a standard flow, and comparing the absolute value of the difference value with a reference value;
when the absolute value of the difference value is unchanged in a preset time period and is not greater than the reference value, determining that the drilling tool is sheared, wherein the shearing supercharging device is in a conventional shearing state;
when the absolute value of the difference is unchanged in the preset time period and is larger than the reference value, determining that the drilling tool is not sheared, enabling the shearing and pressurizing device to enter a pressurizing and shearing state, and controlling a second power pump assembly of the power assembly to be started, wherein the second power pump assembly is used for providing pressure liquid with higher pressure for the blowout preventer compared with the first power pump assembly;
and controlling the second power pump assembly of the power assembly to convey pressure fluid into the blowout preventer, and controlling the blowout preventer to perform shearing action on the drilling tool.
10. The method of claim 9, wherein the standard flow is a flow value measured by the flow sensor when the blowout preventer performs a lost motion shearing action;
when the shearing pressurizing device is in a normal shearing state, calculating and recording the difference value between the real-time flow and the standard flow, and taking the arithmetic average value of the absolute values of the difference values, wherein the arithmetic average value is the reference value.
CN202211202707.1A 2022-09-29 2022-09-29 Shearing and pressurizing device, control method and blowout preventer Pending CN116950935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211202707.1A CN116950935A (en) 2022-09-29 2022-09-29 Shearing and pressurizing device, control method and blowout preventer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211202707.1A CN116950935A (en) 2022-09-29 2022-09-29 Shearing and pressurizing device, control method and blowout preventer

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CN116950935A true CN116950935A (en) 2023-10-27

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